CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues
Property-liability insurance premiums	$ 7,959	$ 7,723
Life and annuity premiums and contract charges	593	566
Net investment income	748	731
Realized capital gains and losses:
Total other-than-temporary impairment (“OTTI”) losses	(62)	(91)
OTTI losses reclassified to (from) other comprehensive income	3	10
Net OTTI losses recognized in earnings	(59)	(81)
Sales and other realized capital gains and losses	193	(68)
Total realized capital gains and losses	134	(149)
Total revenues	9,434	8,871
Costs and expenses
Property-liability insurance claims and claims expense	5,416	5,684
Life and annuity contract benefits	474	455
Interest credited to contractholder funds	173	190
Amortization of deferred policy acquisition costs	1,169	1,129
Operating costs and expenses	1,097	982
Restructuring and related charges	10	5
Interest expense	85	73
Costs and expenses	8,424	8,518
Gain on disposition of operations	2	2
Income from operations before income tax expense	1,012	355
Income tax expense	317	109
Net income	695	246
Preferred stock dividends	29	29
Net income applicable to common shareholders	$ 666	$ 217
Earnings per common share:
Net income available to common shareholders per common share - Basic (in dollars per share)	$ 1.82	$ 0.57
Weighted average common shares - Basic (in shares)	365.7	378.1
Net income available to common shareholders per common share - Diluted (in dollars per share)	$ 1.79	$ 0.57
Weighted average common shares - Diluted (in shares)	371.3	382.9
Cash dividends declared per common share (in dollars per share)	$ 0.37	$ 0.33